Fructus Arctii, the name of traditional Chinese medicine. It is the dry and mature fruit of burdock, a biennial herb of Compositae. It is long, obovate, slightly flat, slightly curved, 5 ~ 7mm long and 2 ~ 3mm wide. The surface is grayish brown, with purple black spots, with several longitudinal edges, usually 1 ~ 2 in the middle. The top is blunt and round, slightly wide, with a ring on the top surface and a dotted style remnant in the middle; The base is slightly narrow, with a lighter complexion. Pericarp is hard, cotyledons 2, yellowish white, oily. Odorless, bitter taste, slightly pungent and slightly numb tongue. Harvest the fruit sequence when the fruit is mature in autumn, dry it in the sun, lay the fruit, remove impurities, and then dry it in the sun. Raw or fried, mashed when used. It has the effects of evacuating wind heat, dispersing lung rash, promoting pharynx and dispersing knot, detoxifying and detumescence. It belongs to the medicine of dispersing wind heat in the medicine of relieving surface. In modern research, Fructus Arctii can also be used to prevent and treat diabetes nephropathy. Fructus Arctii contains arctiin, which is hydrolyzed to form arctiin with anticancer activity.